MAX809TEUR+TCEH

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Power Management Integrated Circuits (PMICs) are important components of most electronic systems. They are used to regulate, monitor and control the power within the system. Supervisors are a type of PMICs that provide system-level control and reset on system power, current, voltage and temperature peripherals. This article explores the application field and working principle of the MAX809TEUR+TCEH, an example of a Supervisor PMIC.

The MAX809TEUR+TCEH is a 6-pin ultra-low-power reset supervisor from Maxim Integrated. It provides on-board microcontroller/microprocessor supply voltage monitoring and undervoltage lockout protection for industrial, automotive, and commercial applications. The MAX809TEUR+TCEH is a RoHS-compliant, lead-free device that features a pull-up/pull-down option and is available in a tiny SOT23-6 package. The device is designed to monitor the battery and microprocessor supply voltage and assert a reset when the voltage level is below a user-programmable threshold.

The application field of the MAX809TEUR+TCEH is wide, as it can be used in many electronic systems. Its primary market is automotive applications, but it can also be used in industrial and commercial equipment. Some specific application examples include automotive/motorcycle engine control, intelligent battery monitoring systems, industrial data logging, portable electronics including mobile phones and IoT devices. Additionally, the device can be used to monitor the power supplies in networking and fax systems.

The MAX809TEUR+TCEH works by continuously monitoring the supply voltage of the system it is connected to. When the device\'s operating voltage drops below a certain threshold, it will assert a reset. The reset threshold voltage is user-programmable and can be programmed from 2.6V to a maximum of 6.7V. The MAX809TEUR+TCEH also features a power-on reset (POR) function, which resets the circuit when the power is first applied. This POR feature is used to guarantee a clean start on power up, ensuring that all circuits remain in a known and expected state.

In addition to monitoring and resetting the system voltage, the MAX809TEUR+TCEH also offers several other features to enhance system performance and reliability. It has an integrated transistor that can be used to provide a pull-up or pull-down to reset input. It also has an open-drain output that can be used to generate an interrupt signal to the microcontroller/microprocessor. The device also has a thermal shutdown feature to protect the system from overheating, as well as active-low and active-high manual reset pins.

The MAX809TEUR+TCEH is a versatile and efficient solution for system-level control and reset on system power, current, voltage and temperature peripherals. Its combination of features such as voltage monitoring and reset, POR, pull-up/pull-down, interrupt output and thermal shutdown makes it an ideal choice for automotive, industrial, and commercial applications. With its 6-pin ultra-low-power design and tiny SOT23-6 package, the MAX809TEUR+TCEH is a great solution for space-constrained applications.

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